During a Q&A session celebrating 75 years of Marvel Comics, legendary writer and editor Stan Lee said that a film crossing the Spider-Man franchise, the Marvel Cinematic Universe and the Fox properties like X-Men and the Fantastic Four "is something that Marvel is very concerned about," which is being taken by some to be an intimation that Marvel is working on putting such a film together.
"It's something that Marvel is very concerned about," Lee admitted. "It's very difficult to bring 'em all together because these characters are so successful and make so much money that the studios that have the rights don't want to let them go. So that's something that all the lawyers and all the production companies have to work out. Whether they get it worked out, I don't know."
You can check out the full video below (these comments are around 53 minutes):
If it happens, we'll be quick to report it. In the meantime, the biggest thing on the Marvel docket is Avengers: Age of Ultron, due out in May.